A specific three-digit number designates a geographic region for telephone communication. For example, calls directed to southeastern Massachusetts, particularly the Cape Cod and Islands region, utilize this numerical identifier to reach their intended recipients.
The implementation of this numbering system facilitates efficient call routing and allows for the identification of the caller’s general location. Its introduction streamlined telecommunications infrastructure, contributing to improved connectivity and simplified area identification. Historically, this facilitated the expansion of telephone services into less densely populated regions.